Refrigeration



April 8, 193% REFRIGERATION Filed June 17 1926 THO/7,45 J L/TLE die.

1". J. LITLE, J-R 1,753,796 A Patented Apr. 8, 1930 UNITED STATES PATENT OFFICE THOMAS J. LITLE, JR., OE DETROIT. MICHIGAN, ASSIGNOR TO COPELAND PRODUCTS, INC., OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN Application filed June 17,

It. is the primary object of my invention to provide in a refrigeration device, the combi nation of an expansion chamber and a refrigerator cabinet to form a freezing chamber in a refrigerator cabinet.

Other objects are the provision of a simple and economical construction which may be manufactured with facility and installed with ease. I

With the above and other Objects in View, my invention consists in the arrangement, combination and construction of the various parts of my improved device'as described in the specification, claimed in 1ny,claims and shbwn in the accompanying drawings, in

which: I, I

Fig. 1 is a sectional view of a portion of a refrigerator cabinet showing partly in section and partly in elevation, my improved eXpan- 2L) sion chamber associated therewith.

Fig. 2 is a sectional view on line 2-2 of Fig. 1.

1 have shown a portion of a refrigerator cabinet 5 having a door 6. Positioned within the cabinet 5 is an expansionchamber comprising superposed sheets of metal 7 and 8 whose edges may be sealed as at 9 and whose top edges, in addition to. being so sealed are flanged as at 10 and secured to the top of the e refrigerator cabinet 5. The portion of the chamber between the flanges 10 is generally of U shape comprising (he bottom 11 and the legs 112. The faces of the sheets 7 and 8 are welded together at intervals as at 12. A- flanged opening 13 is provided adjacent the top of one of the legs 112 with which is connected a refrigerant otftake l4. A similar flanged opening 15 is provided in the other leg of the device with which is connected through a pipe 16 and expansion valve 17 arefrigerant intake pipe 18. A pluralityof ice trays 19 are adapted to rest on the base of the expansion chamber.

The rear edge of the base of the expansion chamber abuts the rear wall of the cabinet as is clearly shown in Fig. 2, and a front cover plate 20 is provided extending from the top of the cabinet 6 to the base of the expansion chamber. Thus a freezing chamber 21 is provided within which is located the ice trays 19',

REFRIGERATION" 1926. Serial No. 116,618.

the top andrear walls of said freezing chamber being formed by the cabinet 5, the side and bottom walls of the freezing chamber being formed by the expansion chamber and the front of the freezing chamber being formed by the cover plate 20. Thus a cheap and economical construction as well as one which may be easily installed and presenting the least opportunity for becoming damaged or unfit for use, is provided.

substantially U shaped expansion chamber in the cabinet and means securing the ends of the legs of the U to a wall of the cabinet to there by form a freezing chamber having a volume less than half the volume of said cabinet.

2. In combination, a refrigerator cabinet, at substantially U shaped expansion chamber in the cabinet and means securing the ends of the legs of the U to a Wall of the cabinet to thereby form a freezing chamber sealed from the remainder of the space within said cabinet, the openspace on at least one face of the U being closed by another wall of the cabinet.

3. In combination, a refrigerator cabinet, a substantially U shaped expansion chamber arranged in the upper part of the cabinet, the bottom of said U being horizontally arranged and the sides thereof projecting upwardly therefrom, means securing the free ends of the legs of the U to the top Wall of the cabinet to thereby form a-freezing chamber, and trays for holdingmatter to be frozen disposed on the bottom of the U.

4. In combination, a refrigerator cabinet, a substantially U shaped expansion chamber in the cabinet, flanges on the ends of the legs of the U, and means for securing said flanges to a wall of the cabinet with the bottom of said U in horizontal position and the edges of said chamber sealed against circulation of air whereby to form a freezing chamber be- 'and an expansion element therein cooperating with the walls thereof to form a freezing chamber, sealed against air circulation, etween said element and certain walls of said cabinet.

7. In combination, a refrigerator cabinet, and an expansion element, said element being secured to the interior walls of said cabinet whereby to divide the interior of said cabinet into a pluralit of chambers of widely different volumes and substantially equal areas of heat absorbing surface. at least one of said chambers being sealed against air circulation.

8. A refrigerator-cabinet the interior of which is divided into a relatively large chamber and a relatively small chamber by an expansion element engaging interior walls thereof at spaced points thereon and sealed against the circulation of air.

9. In combination, a refrigerator cabinet, an expansion element adjacent one end of said cabinet provided with a horizontal wall portion therein, and means extending between the ends of said element and the interior walls of said cabinet sealing the space above said element against the circulation of air from below the same.

10. In combination, a refrigerator, an expansion element therein provided with a horizontally extending portion comprising a pair of generally spaced parallel sheet metal plates, said horizontally extending portion being positioned closer to the top wall of said cabinet-than to the bottom wall thereof, and means preventing the passage of air from below said horizontally extending portion to above the same.

11. In combination, a refrigerator cabinet, and an expansion element formed to substantially U-shape section and having a horizontally extending bottom surface and upwardly extending legs terminating in marginal attaching flanges, said flanges being secured to an interior wall of said cabinet and serving to support said element within said cabinet.

12. In combination, a refrigerator cabinet, the interior of which is divided into a pair of compartments of different volumes sealed against the circulation of air between them, said compartments having a common wall, said common wall comprising a refrigerant evaporator.

13. In combinatiom-a refrigerator cabinet, the interior of which is divided into a pair of compartments of different volumes sealed against the circulation of air between them, said compartments having a common wall, said common wall comprising a refrigerant evaporator formed of a pair of generally spaced sheet metal plates. 7

H. In. combination, a refrigerator cabinet, the interior of which is divided into a pair of compartments of different volumes sealed against the circulation of air between them, said compartments having a common wall, said common wall comprising a refrigerant evaporator formed of a pair of generally spaced sheet metal plates extending between substantially opposite points in said cabinet.

15. In combination, a refrigerator cabinet provided with a pair of compartments therein separated by a common wall and sealed against the circulation of air between them, said wall being formed of generally spaced sheet metal plates forming a refrigerant evaporator between them.

16. In combination, a refrigerator cabinet the interior of which is provided with a pair of compartments sealed against the circulation of air between them by a common wall, said wall being formed of generally spaced sheet metal plates, means for introducing liquid refrigerant between said plates, and means permitting the escape of refrigerant from between said plates.

17. In combination, a refrigerator cabinet having a pair of compartments therein sealed against the circulation of air between them and provided with a common wall, said common wall comprising a pair of generally spaced sheet metal plates sealed together at their edges, and an inlet and an outlet for the space between said sheets.

THOMAS J. LITLE, JR. 

